Home / 747,409.38-1,121,114.06-242,392.80

Finding the Fourth Proportional to 747,409.38, 1,121,114.06 and 242,392.80

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Solution

The fourth proportional to 747,409.38, 1,121,114.06 and 242,392.80 is: 363,589.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    747,409.38 : 1,121,114.06 = 242,392.80 : x
  2. Step 2: Convert to fraction form
    747,409.38/1,121,114.06 = 242,392.80/x
  3. Step 3: Cross multiply
    747,409.38x = 1,121,114.06 × 242,392.80
  4. Step 4: Simplify right side
    747,409.38x = 271,749,976,122.77
  5. Step 5: Solve for x
    x = 271,749,976,122.77/747,409.38
  6. Step 6: Final answer
    x = 363,589.20

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.